package com.guli.gulimall.controller;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.common.utils.BinaryUtil;
import com.aliyun.oss.model.MatchMode;
import com.aliyun.oss.model.PolicyConditions;
import com.guli.common.utils.R;
import org.omg.CORBA.PUBLIC_MEMBER;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;

/**
 * @author DELL
 * #Description OssPolicyController
 * #Date: 2022/3/1 14:48
 */
@RestController
@RequestMapping("/oss")
public class OssPolicyController {

    @Autowired
    @SuppressWarnings("all")
    private OSS ossClient;

    // application.properties
   // alibaba.cloud.access-key=your-ak
    //alibaba.cloud.secret-key=your-sk
    //alibaba.cloud.oss.endpoint=***

    @Value("${alibaba.cloud.access-key}")
    private String accessKey;

    @Value("${alibaba.cloud.secret-key}")
    private String secretKey;

    @Value("${alibaba.cloud.oss.endpoint}")
    private String endpoint;

    @Value("${alibaba.cloud.oss.bucket-name}")
    private String bucketName;

    @RequestMapping("/getPolicy")
    public R getPolicy(){


        String host = "https://" + bucketName + "." + endpoint; // host的格式为 bucketname.endpoint
        // callbackUrl为上传回调服务器的URL，请将下面的IP和Port配置为您自己的真实信息。

       // String dir = "user-dir-prefix/"; // 用户上传文件时指定的前缀。
        Date date = new Date();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        String dir = sdf.format(date)+"/";


        // 创建OSSClient实例。
        //OSS ossClient = new OSSClientBuilder().build(endpoint, accessKey, secretKey);
        try {
            long expireTime = 30;
            long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
            Date expiration = new Date(expireEndTime);
            // PostObject请求最大可支持的文件大小为5 GB，即CONTENT_LENGTH_RANGE为5*1024*1024*1024。
            PolicyConditions policyConds = new PolicyConditions();
            policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 1048576000);
            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);

            String postPolicy = ossClient.generatePostPolicy(expiration, policyConds);
            byte[] binaryData = postPolicy.getBytes("utf-8");
            String encodedPolicy = BinaryUtil.toBase64String(binaryData);
            String postSignature = ossClient.calculatePostSignature(postPolicy);

            Map<String, String> respMap = new LinkedHashMap<String, String>();
            respMap.put("accessid", accessKey);
            respMap.put("policy", encodedPolicy);
            respMap.put("signature", postSignature);
            respMap.put("dir", dir);
            respMap.put("host", host);
            respMap.put("expire", String.valueOf(expireEndTime / 1000));
            // respMap.put("expire", formatISO8601Date(expiration));
            return R.ok().put("data",respMap);


        } catch (Exception e) {
            // Assert.fail(e.getMessage());
            System.out.println(e.getMessage());
        } finally {
            ossClient.shutdown();
        }








        return R.error();
    }









}
